Lamp.



oi? Letters Patent of the United States No..

cierren.

moeite? To' att whom it may concern Be it knoyvn that l, lVniLmM E. Burioni?, a citizen hfthe UnitedStates residing at Chicago, in the county of Coo-lr and State of Illinois, have invented a new and useful lmprovementI in Lamps, of which the following is a speciiication..

My invention relates to an improvement in the glass face for lamps of the kind used as signals on vehicles; and it relates particu-l larly to an improvement in the lamp-face 1,091,l18, granted'to me March 24:, i914.

In the accompanying drawing, Figure l' is a broken view of a lamp-bo y provided with my improved face shown invertical section; Fig.2 shows the face in iront elevation, and Fig. 3 is a sectional'l view of a portion of the face, showing a modification.

The glass lamp-face 4i, shown in circular -orm though it may be. provided in any desiredshape, lits the hingedl annular head 5 on a lamp 6,' which may be an automobilelamp of any suitable construction. The primaryV improvement in the present constructionI lies in forming the ridge-laced device of transparent glass hollow on its rearside,

the hollow side being of the same, or approxiniatelythe same angular shape in cross* section as the outer side. This construction- .facilitates the manufacture by enabling the lamp-*face to be formed of a uniform thickness ofthe glass throughout (except that the edge 4 should be relatively thicker, as represented, for strength), as by molding it between correspondingly-shaped female and male mem-bers of' a mold. Moreover, and particularly, the downwardly-inclined surface o each ridge being rendered translucent as by darkenin orcoating it with a translucent paint, s ellac or varnish, as

shown at 7, the hollow construction of the.

ridge enables the coating to be applied to the inner surface of that part o the ridge, where it is more durable than when Vapplied to the outer surface, being protected v:from the weather and shielded against abrasion Vand wear. `Light from the 'lamp 6 passing through the translucent surfaces 7 is so modified in intensity as to exhibit the face d with a mild degree of illumination,-while these surfaces reflect rays through the lower, transparent, surfaces-8 upon the ground to brilliantly illuminate the latter, thereby throwing the light-signalwithout the blind- Specicaton of Letters Patent.

application nea apra i, nur. tei-m1 no. stars?.

lPateluted il, leid,

ing effect of iightrays passed horizontally through a transparent-glass face, which is liable to cause accidents in autoniobiling. .lt is found desirable to incline downwardly the transparent surfaces (d slightly in the backward direction, as represented, to cause the light-rays refr-acted through them to bc thrown farther forward than when these What I claim as new and desire to secure by Letters Patent is l. In a glass lamp-face, a hollow ridge err tending transversely across the face and having its inner and outer `faces parallel with each other, said'ridge having a translucent upper side inclined downwardly and forn wardly.

2. ln a glass lamp-tace, hollow angular ridge extending transversely across the face A and having its inner aiid outer faces parallel with each other, said ridge having its upper side formed of translucent glass and-,inclined downwardlyl and forwardly and rits lower side formed of transparentiglass.

" 8. A glass lamp-face comprising a series oi' angular ridges oi substantial lvl-shape in cross section, extending transversely across the face and having their inner and outer faces parallel with each other, saidridges having downwardly and forwardly inclined translucent upper sides and lower trans- 1i. A glasslamp-'iaoe comprising a series of hollow ridges of substantially-the same angular cross-section on both sides, each ridge being formedv of a translucent "downwardly-inclined upper side and acorru- .gatedtransparent lower side.

n witnnuu nl'ilnncnr., ln presence (it- A. C. Fractura,- D. C'. Tunesien. 

